Cross-head for locomotives.



PATENTED AUG. 1a, 1908.

H. H. WALCK. GROSS HEAD FOR LOGOMOTIVES.

APPLIGAToN FILED m1311908.

@XN h1 eases To all whom fit mary concern:

HUGH H. WALG'K, OF CHAMBERSBURG, PENNSYLVANA.

CROS-HIEAD FOR LOCQMOTIVS.

specification of Letters Patent.

Patented Aug. 18, 1908.

Application tiled April 7, 1908. I Serial No: @5334.

Be it knownjthat I, HUGH H. WALCK, a citizen of the United States, residing at Chambersburg, in the county of Franklin and State of Pennsylvania, having invented -certain new and -useful Improvements in Cross Heads for Locomotives, do hereby declare that the following is a full, clear, and exact description thereof.

`Reference being had tothe accompanying drawings, Figure 1 is a longitudinal section with parts in elevation, of a locomotive cross head embodying my invention; and Fig'. 2 a cross section on the line 2 2 of Fig. 1.

With crosshepads constructed in use on locomotives prior to my invention7 it is impossible to remove a cross head from its guides `without dismantling the guides, and if it becomes necessary when the engine is out on the road to remove a cross head, it is .necessary to return the engine to the `shops to enable it to bo done.

The object of iny invention is to proyide a construction of cross head for locomotives which can be removed from and replaced in position between the guides, without any disturbance of the guides at all, so `as to siinplify these operations and to make it feasible to perform them wherever Athe engine may be, and as well as to produce a cross head of as few parts as is possible with consistent strength and solidity or rigidity enough to stand, without loosening, the violent vibrations to which the parts of a locomotive are subjected, and for the attainment of my objects, my invention consists in the cross head .for locomotives constructed substantially as hereinafter specified and claimed.

Apart from certain pins and screws or bolts, my cross head consists of but three parts, the head or body 10 havii'ig at one side a socket ll for reception of and attachment of the end of a piston rod, and a transverse bearing 12 for the connecting rod wrist pin, and two shoes 13, one to engage the upper guide 14 and one to engage the lower guide 15, each shoe having as usual on opposite sides the vertical integral flanges 16 to overlap the respective sides of the guides to prevent latorai or sidewise movement of the shoe in either direction. The abutting surfaces of each shoe and the head or body 10 are plane surfaces, and they are provided with a connection of interlocking form,consisting of a'longitudinally extending dovetail rib 17 on one part, and a similarlongitudinally extending groove on the other part, this formv of connection between the head lor body and the shoes being employed by me to rigidly hold the slices from vertical movement. lo. the case of the lower shoe, the rib is on t'he shoe, and the groove isin the head. or body 10, and preferably the rib and groove are iocated centrally in a crosswise direction, while in the case of the uppershoe, the groove is in the shoe and the rib is fon the head or body 10, and the rib and groove are located to one side of the center, and preferably towards the outer side of cross head. of the dove-tail connection between the head or body and the shoes, the shoes are applied and removed by being niov'ed longitudinally, and the length of the shoes is such that they may be moved far enough when in position between the guides to clear the head or body l0 and so admit of the passage of the shoes either outward from between the guides, or inward between them. ting surfaces of the upper shoe and the head or body 10 incline downward in order to fan cilitate the application and removal of the shoe to the head or body 10 when in position beneath the guides, for, as will be evident by reason of such inclination, the engaging or contacting surfaces of the u` per shoe andits guide will be in contact for ut a short time when the shoe is moved longitudinally to slide it on or off the head or body 10, and thus I avoid the friction during the whole time ofapplication of the shoe to or its removal from the head or body which would exist were the abutting surfaces of the upper shoe and the head orbody parallel. with the underside of the upper side.

To hold or connect the shoes to the head or body, so that there will be no longitudinal movement of the parts with reference to each Preferably, the abut- By reason sog:

other, l employ for each shoe two screws or bolts 18, which pass vertically through the head or body into the shoes and secure each of said screws by means of a lock screw 19, and I also use for each shoe a pair of horizontally extending screws or bolts 20 that pass through alining holes in the head or body 10', and in the shoes, and preferably these screws or bolts extend through the dove-tail ribs in order to still further add to the rigidity or stiffness of the cross head, each shoe has on opposite sides vertical flanges 21 which overlap the sides of the head or body 10.

It will be evident that by rny-eonstruction,

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lthe vertical thickness or dimensionofthe less than the space be-A slices and the entire cross head can be eHected without any disturbance whatever of-the guides, and these' operations can 'be perlorined veryreadily and very expeditiously, since they involve the simple manipulation of :i few screws or bolts, lend the endwise or llon-l gitudinal movement of the' shoes relative to' the heed orbody to separate these three parts, all which nieythen be readily passed' between the guides,'fo` r,as will be understood,

heed or body.A 10 is tween the guides. When the heed 0i' body is to be removed, it is, of course, necessary-to unpin it from the connecting rod', and disconnect it from the ,pistonvrod It` willalso be evident that when' the parts of my eross'headl are esseinbled, a strong, rigid structure` is produced, capable of successfully withstanding` the severe strains which ere inevitable on e locomotive;

T he central loeationof the dove-teil cori nection etthe lowcrpart ofthe cross head isv to secure an equal or uniform `distribution et weight upon the lower shoe, foifss will be understood it'susteins the weight, end, to give the lower shoe extre strength for this purpose, the dove-teil rib is formed on the shoe, whereas to reduce the vweight ofi the upper shoe which is hiindled. more frequently, and to vedd strength to the cross vheed body, the groove is formed iii tli'e upper shoe :ind the rib on the cross heed body,y

endthelocatii'in ot the dove-teil connection with the upper shoe et one side"is to render eecess to the parts more convenient or easy.

Wlietl claim is l Across heed l`oi' locomotives coinprisint :t heed or body,v upper und lower shoes, u. dovcfteil rib :ind 2(groove connection between the heed or body end eztch shoe extending longitiulinully ol'A the cross hezithnnd utter-liinn' screws or bolts tor the shoes und heed. il. Across heed l'or locomotives cmnprisinp,

'it heed or body, upper.v and lower shoes, ii dove-teil rib and groove connection between the head" or body'and each shoe extending" longitudinelly let the cross heed, and. attachin screws or bolts, some of .which psi'ss verti ce ly through the perts'end 'some liorizontally through the parts.

3. A cross headtor locomotives comprising a' headv oinbody, upper andlower shoes, e

providei'l Across head forloeoinotives, comprising ai heed or body, iippei'- end lower shoes, :i

. dove/tail rib and groove connection between` lthe heed or Vbody :nid eechfshoe, horizontal bolts or screws passing through the shoes :rnd through the ribs, and vertical bolts or s'erews passing through the l. od y`itndiiitotheshoes.``

'(5. A cross houd l'or locoinotives,fcoinprisdoveteil i'ibhnd groove connection between the rib or body end euch shoe, the abutting surliices o l' one ol' the 'shoes :ind the heed or vbodybeingf` inclined lengthwise of the cross- -liefid,.-

',lii testimony thztt l chillin the l'oregoingl lieve hereunto set my liatnd.

y iiuoii ii.; wAiiiK ,A lll/illnesses:v l lioitnN A. (hier, (icoiioii ll. (funi).

v'76 ing fr heed or body, upper und. lower shoes, e' 

